Concrete form board truing holder



Ap 1933- A. ZANELLA 1,905,616

CONCRETE FORM BOARD TRfiING HOLDER Filed Feb. 29, 1952 T013. flzanella TORNEY.

Patented Apr. 25 I93? APOLLONY ZANELLA, or SPAD-RA, CALIFORNIA PTENT ime ' CONCRETE FORM BOARD TRUING' HOLDER Application filed February 29, 1932. Serial No. 595,791.

This invention relates to concrete form apparatus and more especially to means to facilitate the erection of concrete forms.

It is the general practice in the erection of concrete forms to set up spaced systems of studding and lay planking or roof boards on the adjacent faces of the studding to create a form chamber, and usually the boards, which are laid horizontally edge to edge, are 1 cut so as to bring the abutting ends into place over contiguous studs. This practice requires considerable special carpenter labor in measuring and cutting the boards so that they will end onstuds and involves considerable Waste of board material in cutting off the ends of the boards to break joints directly on the studs. It is a general object of this invention to eliminate such wasteful carpenter labor and the incidental cost due to cutting of the ends of the boards to make joints on the studding.

Frequently concrete forms are set up in which the space is so narrow from one side to s the other of the planking that it is very 'diflicult to drive nails along the lower edges of the boards which are set up on subjacent boards because of the difficulty of swinging the hammer in the confined space. To that end, an object is to provide a method and concrete form system in which the boards can be securely held in a common plane with their superimposed edges held even and true and without necessity of driving nails along the lower edges of the boards where these lap against the studs of the mold frame. In other words, it is an object to provide a method and form in which it is only neces sary to drive the fastening nails along the top edges of the boards as these are lapped against the studs. In the erection of narrow concrete forms, the nails are driven toenail fashion, but incases of wider forms, conventional straight driving may be employed,

More particularly, an object is to provide a very simple, extremely inexpensive, and highly effective device providing means for embracing the top edge of a laid form board 50 and to receive and embrace the bottom edge of a superimposed form board so that boards can be picked at'will from a supply'and laid edgewise on one another in a plane against the relative series of studding along one side of the form without requiringlthei cutting of anyboard to make a butt joint on a stud between the boards, as is the common practice.

Further, it is an object to'provide means to facihtate the erection of a wooden, concrete form without the employment of skillful labor, and especially to eliminate carpenter servlce to cut the boards to'definite length to end on spaced studs of a series; Further, an ob ect is to provide means which not only will effectively hold the abutted ends of boards laid on a subjacent board edgewise, but which will also serve to draw'the boards into a true, common'plane as may be desired at any position along the applied form boards. 5 Further, it is an object to providea form board holder'which is used without requirement of any form of fastening means relatlve to themselves and which is of such a character and is so employed that the holders are in no wise injuredin their period of employment, and therefore may be salvaged for re-use when a concrete form is dismantled from the set concrete filling. In this connection further, it is anobject to prov1de a form board holder of such a type of structure that there is no right or left characterlstic and each holder can be applied expeditiously and regardless of its precise arrangement other than that it is simply placed in position on'a laid. board. The invention consists in certain advancements in this art as set forth in the ensuing disclosure and having, with the above, additional objects and advantages as hereinafter developed, and whose construction, combination and details of means, and themanner of operation will be made'manifest in the description of the herewith'illustrative embodiment; it being understood that modifications, variations andadaptations may be resorted to within the, scope, principle. and spirit of the invention as it 'is more directly claimed hereinafter: V V r Figure 1 is a perspective looking toward I the inside face of a fragment of a board wall of a concrete form.

Figure 2 is a perspective, about full-scale, of one of the holders.

Figure 3 is a vertical, transverse section of coplanar form boards between which a holder is shown in end elevation.

As here disclosed, one wall of a concrete form embodies a horizontal sill 2 on which is stepped a series of conventionally pitched studs 3 against which are-lapped and nailed roof form boards 4 which are superposed edge on edge in a common plane to create a wall against which poured concrete will lodge. a

.In the present system, the boards 4 are picked from a stock supply and laid, regardless of their length, thefirst or bottom along the sill 2 and the stepped lower ends of the studs 3. In thick wall concrete forms, nails can be driven perpendicular through the boards if desired, but as here shown, nails .5 arev driven toe-nail fashion obliquely through the top edges of the boards and into the backing studs 3. 1

It is especially desirable to enable the building up of the board wall without cutting of the ends of the boards so that they can be abutted end to, end, in the usual manner, on the inner faces 3 of the studs. I This elimination of special cutting not only-avoids the carpenterlabor with its cost and loss of time, but also avoids the loss of waste material that has to be cut off-in order to effect abutting of the form boards on the studding. Therefore, as clearly shown in Fig. l, the laborer simply lays the boards edge on edge, regardless of their lengths, and means are provided to effectively tie the abutted ends of the boards where these meet between the spaced studs 3 by anchoring the abutted ends to a subjacent length of board.

The tie or holder here provided comprises a flat plane body 6 which preferably is of sheet metal, for low cost, and its sides are provided with upturned lugs 7 and 8, and downturned lugs 9 and 1 0. The upwardly from the opposite end of the plane and lug 9 is bent downwardly therefrom.

The arrangement of the lugs 7 and 8 at relatively extreme positions as to the length of the holder, has the advantage of producing the maximum holding effort in a holder of given length as allowing a less degree of oscillation of tl e holder thanwould be the case if both of the lugs 7 and 8 were opposite each other on the same end of the holder.

It will be seen that it is only necessary to toe-nail down the upper edges of each of the boaros as these are laid on subjacent boards to which holders 6 can be applied at any desired positions, it being understood that a holder is applied under each end of two boards where theseare abutted between the spaced studs 3 sothatthe abutted ends projectin upon the studding are "effectively anchored to the next lower board. The holders are not only employed to hold abutting ends of boards between studs, but the hold ers can also be introduced at anydesired positions along eachlaid board and especially where the boards may tend to lay out of plane due to warping or curved condition of the boards.

What is claimed is:

1. A concrete form board holder comprising a plane plate at each end of which is a set of lugs which are so disposed in their own setsas to form a Z end-contour.

2. A concrete form board holder comprising a plane plate at each end of which is a set of lugs which are so disposed in their own sets as to form a Z end-contour the Z-forms being relatively reversely arranged.

3. A concrete form board holder comprising a plane plate at each end of'which isa set of lugs which are sodisposed in their own sets as to form a Z end-contour; the Z-forms being relatively reversely arranged; the lugs being about one half of thelength of the plate; v v v APOLLONY ZAN'ELLA.

directed lugs are parallel as, also, are the downwardly directed lugs; these being transversely spaced a distance complementary to the thickness of the formboards l which are to be secured. Preferably, the upturned lugs 7-and 8 are disposed diagonallyopposite the corners of the plane 6 as, also, are the lower lugs 9 and 10 as clearly shown inFig. 2.

The holder may be economically produced in large quantities by a die stamp press by whose action the holders can be completely formed in cutting and bending steps, which latter the several lugs are bent to and set at the proper positions. It will be seen that'the lug 7 is'turned upwardly on the same end of the plane 6 that the lug 9 is bent clownwardly from, while 111g 8 is bent upwardly 

